T55-L-714 Gas Turbine Engine Technical Manual – TM 1-2840-252-23-2

Description

File Details

• Manual Type: Aviation Unit and Aviation Intermediate Maintenance Manual
• Document Number: TM 1-2840-252-23-2
• Engine Model: T55-L-714
• Language: English
• Page Count: 994
• File Format: PDF
• Publication Date: 30 November 2002 (Change 1)
• NSN: 2840-01-353-7635
• Distribution: Approved for public release

Chapters Covered

This technical manual provides comprehensive maintenance procedures for the T55-L-714 gas turbine engine. The document is organized into the following sections:

IMAGES PREVIEW

• Chapter 1 – How to Use This Manual & General Information: Introduction, equipment description, principles of operation, repair parts, special tools, hoisting, troubleshooting, servicing, preventive maintenance, preparation for storage, standard torque limits, and standard practices.
• Chapter 2 – Compressor Section: Covers the Interstage Air-Bleed Actuator, compressor bleed band, anti-icing air gallery cover, compressor housing, stator vane assemblies, compressor rotor blades, air diffuser assembly, output shaft seal and housing, inlet housing cover, air inlet housing, T1 temperature sensor, and related air lines.
• Chapter 3 – Combustion Section: Procedures for the fuel drain valve, combustion section and power turbine assembly/disassembly, combustion chamber vane assembly, combustion chamber liner, and combustion chamber housing.
• Chapter 4 – Turbine Section: Detailed maintenance for thermocouple jumper leads, bus bar assemblies, fireshield assembly, thermocouple harness assemblies, third and fourth stage power turbine nozzles and rotors, No. 4 and 5 bearing package, second turbine disc assembly, first turbine disc assembly, and tailpipe assembly.
• Chapter 5 – Accessory Gear Section: Instructions for the accessory gearbox assembly, PT speed pickup and drive assembly, starter drive assembly, and overspeed drive and outlet cover assembly.
• Chapter 6 – Fuel System: Covers the hydromechanical assembly (HMA), fuel boost pump, fuel manifold assemblies, primer tube, start fuel nozzles, fuel filters, pressurizing valve, flow divider, and various fuel valves and lines.
• Chapter 7 – Electrical and Ignition Systems: Maintenance for ignition coil and cable assembly, spark igniters, ignition exciter, and primary electrical harness assemblies.
• Chapter 8 – Lubrication System: Procedures for the main oil pump, speed pickup, oil cooler, flow programming valve, oil filter, chip detectors, oil lines, and oil level detectors.
• Chapter 9 – Torquemeter System: Instructions for the torquemeter sensor.
• Appendices: Includes references, maintenance allocation chart, expendable supplies and materials list, wiring diagrams, illustrated list of manufactured items, abbreviations, and DECU fault isolation.

This manual is an essential resource for aircraft powerplant repairers and inspectors. It provides step-by-step removal, cleaning, inspection, repair, and installation procedures for all major engine components. The detailed instructions, complemented by numerous illustrations, tables, and torque specifications, enable correct maintenance and repair of the T55-L-714 turbine engine. Having this official technical data ensures procedures are followed to original equipment standards, maximizing engine reliability and safety.

What You Can Do With This Manual

With this complete technical manual, you can perform a wide range of maintenance tasks on the T55-L-714 engine, including:

• Diagnose and troubleshoot engine malfunctions.
• Disassemble and assemble major engine sections: compressor, combustion, turbine, and accessory gear.
• Inspect and repair or replace critical components like rotor blades, turbine discs, seals, and bearings.
• Overhaul and service fuel and lubrication systems.
• Maintain electrical and ignition components.
• Apply correct torque values and standard practices.
• Prepare the engine for storage or shipment.

This manual is the definitive guide for maintaining the T55-L-714 gas turbine engine. It covers the official, approved procedures required by the US Army, ensuring that repairs are done safely and correctly. The instant PDF download gives you immediate access on any device, and you can print sections for use in the workshop.